smtp06.ports.email has no MX records.
Question and response
Question
dig smtp06.ports.email. MX
Answer
The response has no answer records.
Authority
ports.email. 600 SOA dns01.dipcon.com. registry.ports.net. 2025042200 1800 900 1814400 600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0